title: Ossification in a soft tissue embryonal rhabdomyosarcoma.
abstract: We describe the previously unreported finding of ossification within a rhabdomyosarcoma of the extremity in the absence of bone destruction. Rhabdomyosarcoma is a highly malignant tumor but could not be radiographically differentiated from benign or other malignant causes of soft-tissue masses containing calcium. Definitive diagnosis and thus appropriate therapy requires prompt pathologic examination.
mesh_terms: D005260:Female; D006801:Humans; D007223:Infant; D009999:Ossification, Heterotopic / Q000150:complications* / Q000000981:diagnostic imaging; D011859:Radiography; D012208:Rhabdomyosarcoma / Q000150:complications* / Q000473:pathology; D012983:Soft Tissue Neoplasms / Q000150:complications* / Q000473:pathology